Linux's iptables allows powerful firewalls to be implemented at a minute fraction of the cost of many commercial offerings. Basic iptables firewalls are packet filters, which means they inspect the ...

When deciding on a firewall implementation, most Unix-savvy administrators have usually chosen to use ipfilter on OpenBSD for their combination of capabilities and stability, as the capabilities of ...

Iptables, more properly referred to as “iptables/netfilter” because of the two modules that are involved — the userspace module “iptables” and the kernel ...

Most of us think of iptables strictly as a firewall tool for keeping remote attackers at bay. But did you know it also can be used to keep local users in line? The experimental match extension owner ...

Firewall features already available in IPv4 will be added to IPv6 protocol in Linux, but not until later in the year. Version 2.6.12 of the Linux kernel is likely to include packet filtering that will ...

I posted a topic about my firewall script a few days ago and got a ton of help. Instead of reviving that topic, I decided to start a new one. <BR><BR>I'm trying to learn iptables firewalling and I ...